Irene Adler, cross-dresser.

Gayle Hunnicutt as Irene Adler
in "A Scandal in Bohemia"
(Adventures of
Sherlock Holmes, 1984)

There's an interesting discussion by Constance Crompton of Irene Adler's cross-dressing in "A Scandal in Bohemia" in the new issue of Nineteenth-Century Gender Studies.